Ruines de Lens, 1914-1918 (booklet of picture postcards of World War I damage to the village of Lens, France), Box: 11, Folder: 18. Grant-Bradbury family papers, RH MS 965. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/77103 Accessed May 14, 2024.